I repeat, right now may be the last great opportunity of our lifetime to buy gold and precious metals stocks at bargain prices.

I'm Geoffrey Caveney, the author of theDr. Strangemarketblog that's been featured onMarketWatchand other popular financial websites.

I analyze current and historical trends in the global economy, and these trends are telling menow is the time to buy gold and precious metals - their prices are set to skyrocket in 2016 and beyond!

Only the strong dollar and the appearance of an economic recovery have kept the price of gold down, and they are both very temporary conditions.

For this brief moment, the illusion prevails that the Fed can raise interest rates for the first time since the 2008-2009 Great Recession and the economy is strong enough to handle it. When reality proves otherwise, the economy, the dollar, and the stock market will all decline, and the price of gold will soar again.

For those who are paying attention, the danger signs of new cracks in the global economy have been noticeably increasing for the past year and a half:

The slowdown of China's economic growth rate is an alarming development, because the Chinese industrial and manufacturing boom has been propping up the world economy for over a decade.

The dramatic crash in the price of oil, copper, iron ore, natural gas, and just about every other commodity is a reflection of the steep drop in industrial activity and global demand.

It is delusional to think the U.S. economy can keep chugging along in the face of all this, given the interconnected globalized economy we have today. When the economy stalls out and goes into recession in 2016, investors around the world will flock to gold as the ultimate safe haven asset to own.

There's more: An understanding of the history of the gold price and technical analysis of its trend confirm the expectation of a rising gold price in 2016 based on the economic fundamentals. In particular, I like to watchthe price of gold in Swiss francs as well as U.S. dollars.

The Swiss National Bank as well as the Swiss people have more appreciation for and understanding of the value of gold than most Americans -- present company excepted, of course! -- so it behooves the gold market analyst to pay careful attention to this currency in particular. The Swiss franc is also a very strong and stable currency, so gold price movements in francs are meaningful.

And in fact, the price of gold in Swiss francs has been quite stable and steady over the past 2 years, after falling in 2013 from the highs of 2011-2012. Through 2014 and 2015 gold has mostly stayed in a range from 1050 to 1200 Swiss francs. The famous de-linking of the franc from the euro in January 2015 simply served to keep the gold price in francs within the range:

As an illustration of the connection of the Swiss franc to the gold price, take a look at the price action on December 3 and 4, 2015:

On Dec. 3 the dollar weakened dramatically against both the franc and the euro, when the European Central Bank's monetary easing policies did not go as far as investors had expected. The gold price in dollars did not immediately react, so with the franc stronger, the gold price in francs fell dramatically too.

But the next day on Dec. 4 we saw a big upward move in the gold price in all currencies ($1,061/oz to $1,086/oz in dollars). Why?

Because the gold price was correcting to its previous level in Swiss francs.

The consistent long-term trend of the gold price in Swiss francs is clear: it holds steady for a period, then the gold price rises very dramatically (such as in the 1970s-1980, and again in 2005-2011/2012), then there is a correction, it holds steady again, and repeats the process. The past 2 years have been the steady period; the next move will be another dramatic rise in the gold price.

Note that the periods get shorter, and the moves happen faster and faster, over time. The correction from the 1980 level occurred all through the 1980s and took a decade to get down to the steady 1990s level. The correction in 2013 only took a year. Likewise the current stable period will be much, much shorter than previous stable periods - which is why you must buy gold and precious metals stocks NOW before you miss out on the breakout of the next sudden leg up!

As for the Swiss franc and the U.S. dollar, the consistent long-term trend here is equally clear: the dollar gets weaker over time and the Swiss franc gets stronger over time. The dollar strength of the past year and a half is only a correction in the strong trend in the direction of a weaker dollar and stronger franc:

In summary, the price of gold in Swiss francs is due to rise dramatically higher again as its next big move, and the Swiss franc will keep getting stronger against the U.S. dollar. Combine those two trends together, and you will have a massive increase in the price of gold in U.S. dollars.

So what steps can you take to protect yourself, and also to profit from seeing these trends in advance?

Of course you should own gold to protect and grow your wealth, and you should be buying more right now, while the price of gold is low, because it won't stay that way for very long.

But if you want to take full advantage of getting in on the ground floor of the boom in gold and precious metals that's coming in 2016, if you want to maximize the profit potential of seeing this trend in advance,you need to do more than just buy gold.

You need to invest in the stocks of the companies that will benefit the most from the gold boom in 2016 and the years ahead.

Many companies in the gold and precious metals business have leverage to the price of gold, so that when the price rises, their profits and their stock prices will rise many times more.

They also decline more when the price of gold falls, which means that their stock prices have become very, extremely cheap right now as the gold price has bottomed out after falling from its highs of 2011.

This situation has created the perfect opportunity to buy some of these stocks right now, after they have crashed to extremely cheap levels, and right before they are positioned to boom even more than gold itself will.

But you can't just buy any old gold or precious metals stock, or a generic index, and expect to maximize your profits.

Short-term traders buy and sell options on the price of GDX, the standard gold miners index fund, to bet on short-term movements in the gold price. You will hear the traders on CNBC'sFast Moneyrecommend such plays: "Get in, get your 20%, and get out."

But we can aim for much bigger gains than that, because we understand the economic fundamentals behind the bullish case for gold in 2016, which is far more than just a temporary short-term bet.

At the same time, you don't want to limit yourself with an index like GDX, because not all gold mining companies are created equal. Mining is a brutal business, and gold mining in particular attracts some good businessmen, some shady characters, and some wild-eyed fools.

Many gold mining companies that weren't prepared for the downturn of the past few years are now loaded down with mountains of debt, so they won't be in the best position to profit even when the gold price rises again in 2016.

Other companies have foolishly focused their mining operations in areas of the world that will not be the most stable in the turbulent times that lie ahead of us. You can't profit from the high price of gold in times of crisis, if the crisis also makes it difficult for you to operate your gold mine!

In fact, only one of the 3 must-own gold stocks for 2016 is actually a gold mining company.

It is the one gold miner that has controlled its debt levels and avoided operations in unstable areas of the world.

The second company invests in the gold and precious metals industry by using the favorite strategy ofShark Tank's "Mr. Wonderful" Kevin O'Leary: royalties!

Forget about a percentage equity stake in a risky mining operation - this company wants a royalty!

But not all royalty companies are equal either, and one is in the very best position to deliver outsized gains to shareholders in 2016 and beyond.

The third company is the one that will profit the very most when a crisis strikes the "paper gold" market.

The most popular way to invest in "gold" in the financial markets today is the "GLD" fund. Many gold investors warn of the danger of the GLD fund as "paper gold".

Even though the funds in GLD are backed by physical gold in the custody of HSBC Bank in London, investors do not have the right to redeem GLD shares for physical gold.But there are even bigger risks connected with private bank custody of the gold backing GLD.

The biggest risk to any gold investment is the risk that investors will not be able to realize its value in a crisis, when gold is most valuable.

And this is precisely the biggest problem with GLD -the Custodian of its gold, HSBC Bank, is exactly the kind of large private financial institution that is most likely to be at risk of failure in the kind of economic and financial crisis when gold will skyrocket in value the most.

Now technically, even if HSBC goes bankrupt, GLD retains the title to the physical gold backing it. But the GLD Prospectus states: "In the event of the insolvency of the Custodian, a liquidator may seek to freeze access to the gold held in all of the accounts held by the Custodian, including the Trust Allocated Account. Although the Trust would retain legal title to the allocated gold bars, the Trust could incur expenses in connection with obtaining control of the allocated gold bars, and the assertion of a claim by such liquidator for unpaid fees could delay creations and redemptions of Baskets."

Such events alone would likely destroy investors' confidence in GLD. Furthermore, the GLD Prospectus states that the Trust will be terminated and liquidated if, among other events, "The Custodian resigns and no successor custodian is appointed within 60 days".

In the event of termination and liquidation of GLD, investors will get their money back "within a reasonable time", but only at the cash price of gold, minus expenses and fees, at the time of liquidation. In the middle of such a crisis, the price of gold is likely to rise dramaticallyin between the time of liquidation and the time investors get their money back, and they will miss out on all the profits from the rising gold price during that time.

For these reasons and more, there is likely to be a crisis of confidence in "paper gold", and in the GLD fund in particular, during a financial crisis when the price of gold is rising rapidly.

Investors will suddenly and desperately be looking for alternative ways to invest in gold.

One company is better placed than any other to benefit from such a situation. It is the third must-own stock in my special report.

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